How to DIY for the everyone
1. Start small
Pick a project that's inexpensive and smallish to build some confidence. Paint a wall. Repair sheetrock. Even if hardcore DIY jobs aren't your thing don't be scared just start it, and if you have any question ask her, DIY people are very helpful and sharing.
2. Take risks
Don't be scared to mess up. No biggie. You are learning new skill with every DIY project. Give yourself a little freedom and grace when things go wrong. You're new at this, and DIY is all about making mistakes. Most small mistakes are usually only visible to you.
3. Start with what you enjoy or what fits your skillset.
If you like working with electronics start small arduino project. If you've ever sewed, start with curtains.
4. Don't expect to know it all and solve all problems without small help.
Search enginens are your friends. If you can not find something we can always help you here, just post what you already did and what is not working.
5. If there is someone who can do this, there's no reason why we can't either.
Sometimes think that pros have some power, but they just have better tools. You can always rent the tools or ask someone on DIWU in your local city they might have it as well. Don't be shy